The quark model is formulated under the assumption that hadrons are color singlet bound states of constituent quarks with effective masses and interactions. The interactions between quarks can be given by the one-gluon-exchange (OGE) process [1]},
\(V_{ij}^{\text{OGE}}={\alpha _s\over 4}{\lambda }_{i}^{c}\cdot {\lambda }_{j}^{c}\left({1\over r_{ij}}-{2\pi \delta ({\bf r}_{ij})\vec{\sigma }_{i}\cdot \vec{\sigma }_{j}\over 3m_im_j} \right),\) 
